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Vendor Transparency Comparison

TB-500
Vendors Scored on Transparency

13 scored vendors carry this compound · Ranked high to low by VTS · Updated August 2026

Every vendor in PeptideClear's scored catalog that publicly lists TB-500, ranked by their Vendor Transparency Score. VTS measures what a researcher can verify before purchasing - third-party testing practices, COA accessibility, batch traceability, and operational disclosure - from publicly available materials only. It is not a rating of product quality, purity, or safety. If you are sourcing this compound, transparency is the variable within your control.

No affiliate revenue. PeptideClear takes no cut from any vendor listed here. Vendors are scored whether or not they want to be. Every scored point traces to a public source. How VTS scoring works →
Scored vendors carrying TB-500 (13)
Vendor Band VTS Key transparency finding
Verified Peptides verifiedpeptides.com High 80 500+ published batch COAs with HPLC purity and identity data; lot numbers and testing dates publicly accessible; full policy documentation present.
Ascension Peptides ascensionpeptides.com Moderate 76 Public COA library with named labs (SafeCert Labs, MZ Biolabs); HPLC and MS per batch; lot numbers match vials. Aggressive affiliate pricing model produces sticker prices above actual checkout cost.
Eternal Peptides eternalpeptides.com Moderate 76 Janoshik COAs published per lot and linked from product pages; HPLC and MS confirmed; lot numbers on COAs match shipped vials per community reports.
Peptide Crafters peptidecrafters.com Moderate 76 Triple-batch analysis with HPLC-MS, endotoxin (USP <85>), and sterility (USP <71>) testing; US lyophilization stated; public policy pages present.
Alpha Omega Peptides alphaomegapeptide.com Moderate 64 GMP-certified US manufacturing; COA documentation stated per batch; public product and policy pages present. Testing lab name not prominently disclosed at time of scoring.
PureRawz purerawz.co Limited 59 Broad multi-format catalog with COAs stated per batch; some COAs publicly accessible, others inconsistent. Wide product range includes SARMs and research chemicals alongside peptides.
Biotech Peptides biotechpeptides.com Limited 59 US synthesis and lyophilization stated; COAs available but accessibility and consistency vary by product. Carries TB-500 standalone and in blend formats.
Blue Sky Peptide blueskypeptide.com Limited 55 Established US vendor since the mid-2010s; COA documentation inconsistent across the catalog. TB-500 listed as a standalone vial and in a bundle with BPC-157.
Apex Peptides apex-peptides.com Limited 44 60+ compound catalog; COAs available on request rather than published per batch. Carries TB-500 standalone and in a BPC-157 blend.
Skye Peptides skyepeptides.com Low 38 74-compound catalog; COA documentation present but limited pre-purchase public accessibility. No named testing lab identified at time of scoring.
Core Peptides corepeptides.com Low 28 Batch COAs stated as available; limited public documentation accessible before purchase. Carries TB-500 and a BPC-157 + TB-500 blend.
Rebirth Labs rebirthlabs.org Low 28 Third-party testing claimed; COA accessibility limited at time of scoring. Operating entity name, physical address, and named testing lab not publicly disclosed.
Atomik Labz atomiklabz.com Low 20 Active vendor with positive community reviews and competitive pricing. No COAs publicly accessible and no named testing lab identified at time of scoring.
How to read this table
VTS measures transparency, not product quality
A high VTS score means a vendor publishes verifiable documentation about their testing process before you purchase. It is not a guarantee of purity, potency, or safety. A low VTS score means less is publicly verifiable - not that the product is necessarily inferior. The ranking exists so you can make an informed choice about what level of documentation you require for your research.
All scored vendors carrying TB-500 are listed, not just top scorers
This page shows every vendor PeptideClear has scored that publicly lists BPC-157. Low-scoring vendors are included because their position in the ranking is itself useful information - the gap between a 94 and a 20 tells you something meaningful about the documentation landscape for this compound.
Scores reflect publicly accessible information only
VTS is scored from what a researcher with no prior account can access and verify. COAs behind login walls, email-on-request systems, or account-gated catalogs are treated as non-public. This mirrors the experience of a real buyer comparing options before committing to a vendor.
Why some scored vendors are not on this page
One scored vendor - Protide Health (88/High) - carries TB-500 but requires a free account login to browse their full catalog. Because this page applies the same public-visibility standard as VTS scoring, Protide is not listed here. This is not a judgment on their product quality.
Vendor carry data verified from each vendor's canonical domain, August 2026. VTS scores reflect the most recent scoring log for each vendor - see individual vendor pages for full dimension breakdowns and sourcing. VTS measures process transparency from publicly available materials only. It is not a certification of product safety, purity, or efficacy. PeptideClear has no affiliate, referral, or commercial relationship with any vendor listed on this page. Vendors are scored whether or not they want to be. VTS methodology →